Model :

Hardware Version :

Firmware Version :

ISP :

Hello,
Sorry in advance for my english.
I have a tp-link router model TL-WR841N(v11 with latest firmaware) which drops WAN connection(WAN led goes from green to orange) for a couple of minutes at irregular times(sometimes every 2 min, 15 min, 1h, etc.) and I lose internet access to PCs and wifi.
I use the router to connect 2 PCs via LAN interface and smartphones via wifi.
The ISP said that is not from their part since I don't have problems when I plug the cable in to the computer and i introduce the IP manually in to the network settings(I have a static IP address).
In WAN settings I've introduced the ip/subnet mask/dns provided by the ISP. MTU size is the default one 1500.
The routers MAC is cloned to my PCs mac address since my ISP requires my mac address to provide internet.
In LAN settings the IP is 192.168.0.1, the subnet mask is 255.255.255.0 and IGMP proxy is activated.
in WIFI settings i only changed the name,region and the password for wpa/wpa2- personal
The DHCP server is activated with the following settings :
Start IP:192.168.0.100
End IP:192.168.0.199
Address Leas Time: 1440
Default Gateway:192.168.0.1
Default Domain: (BLANK)
Primary and Secondary DNS are the ones provided by the ISP
In Security>Base all options are enabled. In advanced Security I haven't changed anything.
IPv6 is disabled.
In System journal i don't recive any errors or warrings.


Maybe someone can help me with this problem.
Thank you.